Effect of Water Chemistry and Hydrodynamics on Nitrogen Transformation Activity and Microbial Community Functional Potential in Hyporheic Zone Sediment Columns

Liu, Yuanyuan1,5; Liu, Chongxuan1,2; Nelson, William C.1; Shi, Liang1,3; Xu, Fen1,3; Liu, Yunde1,3; Yan, Ailan1,4; Zhong, Lirong1; Thompson, Christopher1; Fredrickson, James K.1; Zachara, John M.1

2017-05-02

10.1021/acs.est.6b05018

ENVIRONMENTAL SCIENCE & TECHNOLOGY   影响因子和分区

0013-936X

1520-5851

Hyporheic zones (HZ) are active biogeochemical regions where groundwater and surface water mix. N transformations in HZ sediments were investigated in columns with a focus on understanding how the dynamic changes in groundwater and surface water mixing affect microbial community and its biogeochemical function with respect to N transformations. The results indicated that denitrification, DNRA, and nitrification rates and products changed quickly in response to changes in water and sediment chemistry, fluid residence time, and groundwater-surface water exchange. These changes were accompanied by the zonation of denitrification functional genes along a 30 cm advective flow path after a total of 6 days elution of synthetic groundwater with fluid residence time >9.8 h. The shift of microbial functional potential toward denitrification was correlated with rapid NO3- reduction collectively affected by NO3- concentration and fluid residence time, and was resistant to short-term groundwater-surface water exchange on a daily basis. The results implied that variations in microbial functional potential and associated biogeochemical reactions in the HZ may occur at space scales where steep concentration gradients present along the flow path and the variations would respond to dynamic HZ water exchange over different time periods common to natural and managed riverine systems.

SCI ; EI

英语

NI期刊

通讯

China Postdoctoral Science Foundation[2015M582305]

Engineering ; Environmental Sciences & Ecology

Engineering, Environmental ; Environmental Sciences

WOS:000400723200016

AMER CHEMICAL SOC

20172403763622

Biogeochemistry ; Denitrification ; Groundwater ; Hydrochemistry ; Microorganisms ; Nitrogen ; Sediments ; Stream flow

Waterways:407.2 ; Surface Water:444.1 ; Groundwater:444.2 ; Biology:461.9 ; Geochemistry:481.2 ; Soil Mechanics and Foundations:483 ; Chemical Reactions:802.2 ; Chemical Products Generally:804

ENVIRONMENT/ECOLOGY

Web of Science

1.Pacific Northwest Natl Lab, Richland, WA 99354 USA
2.Southern Univ Sci & Technol, Sch Environm Sci & Engn, Guangzhou 518055, Guangdong, Peoples R China
3.China Univ Geosci, Sch Environm Studies, Wuhan 430074, Hubei, Peoples R China
4.Zhejiang Univ Water Resources & Elect Power, Inst Hydraul & Environm Engn, Hangzhou 310018, Zhejiang, Peoples R China
5.Nanjing Univ, Sch Earth Sci & Engn, Nanjing 210023, Jiangsu, Peoples R China

Liu, Yuanyuan,Liu, Chongxuan,Nelson, William C.,et al. Effect of Water Chemistry and Hydrodynamics on Nitrogen Transformation Activity and Microbial Community Functional Potential in Hyporheic Zone Sediment Columns[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2017,51(9):4877-4886.

Liu, Yuanyuan.,Liu, Chongxuan.,Nelson, William C..,Shi, Liang.,Xu, Fen.,...&Zachara, John M..(2017).Effect of Water Chemistry and Hydrodynamics on Nitrogen Transformation Activity and Microbial Community Functional Potential in Hyporheic Zone Sediment Columns.ENVIRONMENTAL SCIENCE & TECHNOLOGY,51(9),4877-4886.

Liu, Yuanyuan,et al."Effect of Water Chemistry and Hydrodynamics on Nitrogen Transformation Activity and Microbial Community Functional Potential in Hyporheic Zone Sediment Columns".ENVIRONMENTAL SCIENCE & TECHNOLOGY 51.9(2017):4877-4886.